First Edition
– the first edition of this collation and the article ‘Chronological Synchronisation
of the Irish Annals’ accompanied the publication of Mc Carthy, ‘The
Chronology of the Irish Annals’, PRIA 98C(1998)203–55, and collated
essentially AT/CS/MB/AU over the years AD 307–722.

1 Sep. ‘99

Second Edition
– this edition extended the collation backwards to cover the years AD 1–306,
and it included where appropriate AR/AI/AB/CM. The tables were divided into
c. 70 Kbyte units to facilitate Web downloading and on-going maintenance.

19 Sep. ‘00

Third
Edition – this edition extended the collation of AT/CS/AU forward to
cover the years AD 767–1178, thus fully covering the entire Christian era of
the Clonmacnoise group of annals.

17 Mar. ‘05

Fourth Edition – this edition has extended the
collation forward to cover the remaining years of the annals of the kalend
tradition, viz. AD 1179–1590, by collating the Connacht group of texts LC/CT
with AU. Additionally the following changes have been made to the earlier
parts of the collation:

a) The misleading title ‘Annals of
Clonmacnoise’ employed by Ware, O’Flaherty and Murphy for Conell
Mageoghagan’s compilation of 1627 has been replaced by ‘Mageoghagan’s
Book’=MB. While MB translates many Clonmacnoise entries it substitutes a
comprehensive series of reigns of Irish kings for the kalends apparatus of the
Clonmacnoise chronicle. The compilers of FM also employed this regnal canon
and a separate collation of this has been made available online, cf. d) below.

b) The annals of ff. 12–14 of TCD 1282, which
had in 1858 been associated by J.H. Todd with AT, have been restored to AU to
which they belong, cf. Mc Carthy ‘The original compilation of the Annals
of Ulster’, pp. 77–84.

c) Small adjustments have been made to the
locations of the six kalends restored over AD 612–64 in order to improve the relationship
between the synchronised chronology and the independent chronology of known
events over this interval.

d) The regnal canon providing the primary
chronological apparatus of both MB and FM has been collated for a wide range
of chronicles including the Laud synchronisms, chronological poems, Lebor
Gabála and Foras Feasa.